EAKTHQUAKES ON THE PACIFIC COAST 167 



lasted about thirty seconds, and was probably the most severe 

 earthquake ever felt in this city. As far as known no damage 

 was done (VII). 



1892. February 3; Astoria, Oregon; 81i. 27iii. p. in. 



The vibrations were from southwest to northeast. It lasted about 

 three seconds, causing houses to shake perceptibly, but no damage 

 was done. 



1892. February 3; Salem, Oregon; 81i. 32m. p. m. 



The vibrations were from northeast to southwest. There were 

 three distinct shocks. Windows rattled and buildings trembled, 

 but no damage is reported. 



1892. February 3; Yaquina Head Liigrhtbouse, Oreg-on. 



A light shock about S.20 p. m. Warrior Kock Lighthouse (Colum- 

 bia Kiver) a shock Feb. 3, 8.40 p. m., N. to S. 



1892. February 5; Mount Hamilton. 



Prof. Holden was awakened by a shock and noted the time as 

 6.27.42 a. m. Intensity = V to VI, Kossi-Forel scale. 



Mr. Otto Erie was awake and dressing and noted time 6.27.50 a. m. 

 Direction north and south. Prof. Campbell was awakened by the 

 shock and noted the time as 6.27.50 ± 3s. Intensity, E. F. =:V; 

 duration, two seconds; north and south. Rattled w^indows, wash- 

 bowls, etc.; rocked bed. Also felt at Niles. 



1892. February 23; Carson City, Nevada. 



Prof. Friend sends a tracing of an earthquake which occurred be- 

 tween 9 p. m. February 23 and 7 a. m. February 24. He says: 

 " No one here, it seems, has felt it, and consequently cannot 

 give you the exact time." The maximum disturbance being about 

 E. S. E. by W. N. W., having an extreme amplitude of 17° on 

 the plate, with a motion at right angles to this of 7 mm. 



1892. February 17; Forestville, Sonoma County. 



A shock. 



1892. February 23; San Diego. 



Earthquake shocks are frequent of late. Near midnight, February 

 23, the first shock, lasting seventy seconds, cracked walls of 

 buildings, and people were thoroughly frightened, VII. Six or 

 eight more shocks were felt that night, the second shock occur- 

 ring just thirty minutes after the first one. Nearly every night 

 since there have been one to three slight shocks. So severe was the 

 first shock that the undulations gave many the feelings of sea- 

 sick patients. Along the Pacific coast from Mexico to British 

 Columbia slight shocks were felt, especially in Oregon and 

 Washington. 



